Holley Sniper EFI Instruction RSS Feed

Interest in the Holley Sniper EFI System has been so explosive that we decided to give it its own category here at Holley EFI University. Starting with the new product announcement that kicked it all off we offer more specific instruction on this dynamic kit.

Adding Transbrake Control to your Sniper EFI System

Adding Transbrake Control to your Sniper EFI System

Chris Myer 12/18/18 0
Introduction We received an amazing positive response to our recent article on Configuring and Wiring Sniper EFI System for Nitrous Oxide.  But many readers wanted to know how to setup their Sniper EFI System to control both Nitrous and a trans-brake...
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Configuring and Wiring Sniper EFI System for Nitrous Oxide

Configuring and Wiring Sniper EFI System for Nitrous Oxide

Chris Myer 10/10/18 3
Introduction As always, a note up front about what this article is and isn't.  First, I don't specify any nitrous hardware in the article.  There are a huge range of brands and an even larger range of different kits within those brands.  I don't get ...
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IAC Testing Procedures

IAC Testing Procedures

Chris Myer 09/14/18 2
It is not uncommon to question whether your Idle Air Control Motor (or IAC) on your EFI System is fully operational.  At times you might find that your idle is not behaving as you expect--too high, too low, or erratic.  The purpose of this instructio...
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Improved Sniper Timing Control

Improved Sniper Timing Control

Chris Myer 07/12/18 5
Introduction NOTE 1: This article provides guidance on changing your ignition timing. Bad things can happen if you put too much timing into an engine. The reader proceeds at his or her own peril. I would never advise anything that I felt was not in t...
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Sniper Software and Firmware Updates

Sniper Software and Firmware Updates

Chris Myer 04/24/18 5
Important: The purpose of this article is not to suggest that you change your firmware or software version.  After over 30 years in software and electrical engineering, I have learned never to upgrade any sort of software without good reason.  If it'...
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Separating Mizu P25 Connectors

Separating Mizu P25 Connectors

Chris Myer 10/26/17 3
If you have one of Holley's 3.5-inch Touch-Screen LCD displays you have already encoutered the Mizu P25 waterproof connector.  This connector was designed specifically for low-voltage signals in the automotive, industrial, and consumer appliance indu...
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Top 10 Sniper EFI Installation Tips from Holley's Tom Kise

Top 10 Sniper EFI Installation Tips from Holley's Tom Kise

Chris Myer 08/11/17 20
Holley Technical Training Manager Tom Kise recently published a list of ten "suggestions" for Sniper EFI System installation and I offer them here essentially unedited.  While I have different insights on a few of the finer points this is all great i...
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Solving RF Interference Issues in Sniper Installations

Solving RF Interference Issues in Sniper Installations

Chris Myer 05/25/17 6
In my experience the far majority of Sniper EFI customers never have a problem with radio frequency / electro-magnetic interference (RFI/EMI). However, a small percentage (about 10%) runs into this challenging gremlin. And when you do it can seem lik...
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Demystifying Holley Terminator and Sniper Ignition Hookup

Demystifying Holley Terminator and Sniper Ignition Hookup

Chris Myer 02/1/17 26
I recognize that the ignition control part of an EFI system can be the most intimidating part of the entire project.  And most EFI System manufacturers seem to focus more on "how to connect it" than "how it works", so even after some folks get it wor...
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Solving Holley Sniper High Idle Issues

Solving Holley Sniper High Idle Issues

Chris Myer 12/13/16 41
Introduction Ok, we have enough Sniper systems out there that I thought it would be a good idea to create a posting on challenges that might arise during installation. The broad consensus has been that the Sniper is an amazingly straight-forward inst...
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Holley Sniper EFI Installation Tips

Holley Sniper EFI Installation Tips

Chris Myer 09/28/16 25
Required Texts for Holley Sniper EFI Installation Tips Ok, any decent course is going to require a few texts. The good news is that these don't cost you anything! If you don't already have them, Please download the following PDF files:  Owners & Inst...
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Holley Sniper EFI, Cost Effective, Easy to Install!

Holley Sniper EFI, Cost Effective, Easy to Install!

Chris Myer 11/18/15 66
You might think that EFI and vintage cars go together like engine oil and coolant. And I am the first to admit that there is something especially cool about a retro-rod that runs cleanly on a well tuned carburetor. But at some point the average owner...
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